1. Atoms are mostly empty space2. The nucleus is small and dense, positive charge N. Bohr (1913) Bohr Model- electrons are orbiting the nucleus in fixed pathsPlanetary model Subatomic Particles Protons, Neutrons, and Electrons Protons Amount= Atomic Number -Positively charged (1+)- mass = ...
Why are electrons allowed to fall on a crystal plate for diffraction? Why are objects with vast number of electrons normally not electrically charged? Give a reason why all mesons are formed from a quark and an anti-quark. If the space inside an atom is not a vacuum, then what is it?
, which is just fancy speak for “stuff rolls downhill”). If the atoms are too close together some electrons find themselves in high-energy states, and if the atoms are a little farther apart those electrons will be in lower energy states. So, there’s a force that ...
What discovery demonstrated that atoms are mostly empty space? Who proposed the Big Crunch theory? Who discovered the quantum theory of light? Who invented string theory? Who discovered radioactivity? Who first created modern science? Who invented the quantum computer?
Rutherford concluded that thegold atoms were mostly empty space, which allowed most of the alpha particles through. However, somesmall region of the atom must have been denseenough to deflect or scatter the alpha particle. He called this dense regionthe nucleus(seeThe Rutherford Experimentfor an ...
that atoms are mostly empty space what did jj thompsons model of an atom look like it looked like a chocolate chip cookie. the chocolate chips were the electrons, and the cookie was all positively charged matter. what did ernest rutherfords model look like? it looked like a big circle with...
nucleus of the atom, where protons are located. Atoms are mostly empty space. Niels Bohr changed Rutherford’s model in 1913. Bohr said that electrons move around the nucleus in fixed energy levels. Electrons can move from one energy level to another. ...
An atom is mostly empty space. Almost all of the mass of the atom is concentrated in the nucleus. The protons and neutrons in the nucleus are very tightly packed. The number of protons and neutrons is always the same in the neutral atom. All of the above statements (A–D) are true....
1. The atom is mostly empty space. 2. It contains a very small, dense center called the nucleus. 3. Nearly all of the atom’s mass is in the nucleus. 4. The nuclear diameter is 1/10,000 to 1/100,000 times less than atom’s radius. ...
Why don't atoms collapse if they are mostly empty space? What are the three basic parts of an atom? Name three different types of evidence for the existence of atoms. Distinguish between an atom and an element. Define Isotopes. Natural radioactivity was discovered by ...